Stop mechanism for shears.



G. J. BRYEN. STOP MECHANISM FOR SHEARS;

APPLICATION FILED AUG.17, 19111 1,012,805.

Patented Dec. 26, 1911.

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Patented Dec. 26

2 SHEETS-SHEET 2.

WITNESSES GEORGE J. BRYEN', or DUQUESNE, PENNSYLVANIA.

STOP MECHANISM FOR SHEARS.

Specification of Letters Patent.

Patented Dee. 2 6, 1911 Application filed August 17, 1911. Serial No.644,695.

To all whom it may concern:

Be it known that I, GEORGE J. BRYEN, a citizen of the United States,residing at Duquesne, in the county of Allegheny, State of Pennsylvania,have invented certain new and useful Improvements in Stop Mechanism forShears, of which the following is a specification.

My invention relates to shear stops used in conjunction with shearingapparatus employed to cutlong pieces of metal, such as multiple lengthbillets, slabs, blooms, and

similar materials, to arrest the longitudinalv movement of the uncutportions of the materials necessarily imparted thereto after each of thesuccessive shearing operations to whichthe uncut materials are subjectedin severing such multiple length materials into a series of 'shorterpieces having a pre-determined length.

One object of my invention is to provide a stop mechanism for shearingapparatus having a stopping block arranged to move into and out ofoperative position on its carrier and having novel means for adjustingthe stopping block and carrierjtoward and away from the knives orcutters of the shearing apparatus to vary the length of "the pieces intowhich the multiple length materialsbeing sheared are cut by the shearingapparatus.

Another object of the invention is to provide a stop mechanism forshearing apparatus having improved actuating mechanism for the stoppingblock whereby the shear stop is moved out of the path of lengthwisemovement of the pieces of sheared materials and whereby the stop isshifted into and out of operative position while held in any of theseries of posit-ions into which the stopping block is adjusted incutting or shearing the materials into pieces of varying length.

A further object of thisinvention is to provide a stopping block andstop holding mechanism ofnovel construction having improved .meanswhereby. the stopping block is rigidly held in position and is adaptedto be readily released and moved into its inoperative position by theactuating mechanism for the stopping block.

A still further object of my invention is to I provide a horizontallyadjustable stopping block support or cirrier adapted to engage with andlimit vertical movement of the forward end of the metal being severedduring the severing or cutting operations.

A still further object of the invention is to provide a shear stop andshear mechanism for a duplex or double shear having'a novel combinationand arrangement of the parts forming the stop mechanism, as will appearmore fully hereinafter.

- Referring to the drawings, forming part of this specification, Figure1 is a longitu-- dinal side elevationof a duplex shear and shear stopmechanism constructed and'arranged in accordance with my invention..Fig. 2 is a plan of the apparatus shown in Fig. 1. Fig. 3 is atransverse section on the line III-III of Fig. 1 showing the manner inwhich the adjustable cross head or stop carrier and stop are adjustablysupported. Fig. 4 is a transverse section'onthe line IV-IV of Fig. 2showing the operating cylinders forming part of the stop actuatingmechanism, as -mounted upon the stationary slide support for theoverhung. cross heads or block carriers and stopping blocks.

In the accompanying drawings, the numerals 2 and 3 designate the cuttingmecha: nism forming the duplex shear. The cutting devices are arrangedside by side and are of the hydraulic type in which the top shear knife4 is stationary and the bottom shear knife 5 is arranged to bemoved-vertically in severing the metal into pieces. A hydraulic cylinder6 which is mounted upon a stationary plunger 7 and-to which the 111ovable shear knife 5 is removably secured s employed to actuate themovable shear knife 5 through its cutting stroke and a plunger 8 in thepull-back cylinder 9 is pro.- vided to move the knife 5 in the oppositedirection.

Secured by oneend tothe delivery side of the shear and extendinghorizontally in front-thereof is a built-up beam or girder 10 forming ahollow support for the stop carrier or cross-head 11 which is arrangedt-o'be moved. horizontally on the support 10 and to be secured-in anyposition to which it is adjusted in the length of this cross-headsupport.

The crosshead 11 has a T-sh'aped portion 11 which engages with ways orslides 12 mounted on the sides of the support 10 between the beamsforming the support. As shown, the support 10 is formed of two .rolledchannel beams which are held in their spaced-apart relation at one endthereof by means of the connecting plate 13. .The plate 13 is also usedto provide means by which the support is also secured to .the shears' "Aseparator -or spreader 14 on the other end. 'of-the support 10 isprovided to maintain the beams forming the support in their spaced-apartposition.

, Secured on the upper surface of the lower flanges of the'ch'annelsforming the support 10- is a segmental rack 10- having teeth whichengage with the teeth of spur pinions mounted on the crosshead 11 for apurpose described later.

Secured:- thereon, at an' intermediate point in the length of thecrosshead support 101 are .two ;pairs of oppositely facing single actinghydraulicicylinder's 15, 15 and 16, y

16*. A suitable base'plate 17 is secured n the.top flanges of-thechannel beams for ing 'the support 10 to which the cylinders '15, 15*and-16, 16 rare secured;-aud also secured on this base plate .17 areguides-18,

18, a'nd19, 19, in which are movablysecured the plungers 20 and 21 forthe cylinders. v

The plungers 20 and 21 have end portions, which'are cylindrical in crosssection andhave an intermediate-portion which is rectangular in crosssection, the rectangular portion of the plungers sliding-"in thebearfings or guides 18 and 19. The cylinders are provided with the usualstufling boxe in which glands 22 are mounted. y The 'crosshead' 11 isarranged to extend f -transversely on the support 10 in su'ch man n'erthat its opposite ends overhang. the roller delivery tables 23 on whlchthe sheared materials are delivered from the shears 2 and 3. Located ineach overhang ing'end of thecrosshead 11 is a' vertically extendingrecess or'hole 24 into which the' vertically movable stopping blocks 25are mounted. The stopping blocks 25 ar wedge-shaped longitudinally andthe e'ngaging faces of the openings'24 in the cross- .head are similarlytapered so that the stopping blocks 25 when moved. downwardly-within theholes 24 in the crosshead 11 will be. rigidly held in stopping positionon the crosshead above the feed roller table and in front of the line'oftravel of-materials emerging lengthwise from the shears. The. upper endof each stopping block 25 isconnected. by pins 2,6-and links 27 with theouter end of the lower lever arm of the bell crank 28. The bell crank 28is pivotally secured by the pin 29 to the crosshead 11 and the upperend'of the other arm: of the bell crank 28 is secured by the pin 30 tothe lug'31? onthe sleeves 3 which are. secured on the reach rods 37 soas tof'be-ad justablealong the length of the/reach rod. Pins 38. and; 39which'engage in theholes 40: provided the .reachrodsj'3Z are-femployedto hold the sleeve 31 inthe desired ad usted position on the reach rods.In some cases it is possible that one of ating cylinders in a directiontomove the shear stop downwardly, b.efore the sheared material haspassed from ,under the then lifted stopping block 25, and,to'- preventdamage to the apparatus in such case the pins 39. and the sleeve 31 onthe reach rod, sothat the rods -37. can'be actuated or movedlongitudinally without necessarily moving, the sleeve 314and, throughthe connecting mechanism, its shear stop 25 until after the feed rollertable 23 has moved sheared'maof the downward path ofthese blocks.

One end of each reach-rod is pivotedto a connecting arm 42 which is'adjustably the plungers "2 0 or 21, a removable pin 43 2 1, and securethe arms 43 inadjusted-position thereon.

The fluid pressurev cylindefs 15 and 15 :16 and 1,6, and the shearcylinders .6 and 9 .are preferably-all cross connected together "into asingle.operating"valve in a manner adapted to move one. stopping block25 dowiiwardlyj and then move the shear knife 1 the shear 2 in'front-of" which it is mounted-through its cutting stroke, while thestopping block 25 in front'of the other shear is caused to lift into itsinoperativd position, a corresponding movement of the shear knife 5 onthe 'other shear '4 being made. By .connectingthe shear and stop and thestoppingblocks are manipulated through the valve controlling the cuttingmovements'of the knives on the shears by a single operative, althoiigthe parts may. be'connected to independent valves when so desired.

In the operation of my improved apparatus thepa'rts are assembled asshown in the drawings. {The crosshead 11 is then adjusted lengthwise onthe support 10 into position to' -locate the face of the shear stops 25a suiiicien't distance ink-front of the face of the shear knives 4 and 5to out the materials into pieces of the desired length.

10: into its several-adjusted positions by means of the spur pinions 44wh1ch' are mounted on the I'jcarrier or cross-head and rack 10 'o1'1 thesupport 10. The pinions 44 end of the shafts 46 to which inion's 44 aresecured; After the crosshe d has been so adjusted'a pin '47 1sinserted'in the reach rods will be actuated by the oper- Y helicalsprings 41 are pro vided between the.

aetuating mechanismstogether the shears The cross head 11 is moved onthe support:

are; rotated by. the levers. 45 on the outer.

: registering, holes 48 inthe cros'shead' 11, and:

terials-"beneath the stopping, blocks 25 out mounted on the'squaredmiddle portion of being provided to extend through the holes in registerin the arm 42 and plunger 20 or are'arranged to engage 'withthe toothed4,9 in the sides of the support so as to rigidly attach the cross head11 to the crosshead support 10. The pins 38 and 39 also are shifted andput in the requisite holes 40 in the reach rods 37 so as to connect thebell cranks 28 with the plunger-s 20 and 21 forming part of the stopactuating mechanism. \Vhen inadjusting the reach rod it is foundnecessary to move the 'ilungers 20 and 21 relatively to the crosshead11, the pins 43 are removed and .againplaced in other of the holes 50then found to be in register after such adj ustment is made. The rollers51 of the feed table leading to the shear are then rotated to move themetal being sheared lengthwise until its forward end is again inengagement with the face of the then depressed stopping block 25 and theshear knives 4 and 5 are then caused to approach so as to sever a pieceof pre-determined length from the metal. The operating valve is thenmanipulated to cause the movable shear knife 5 to move in the oppositedirection or away from its stationary shear knife and this samemanipulation of the shear operating valve also admits fluid pressureinto one or the other of the cylinders 15 and 16, at the same timeconnecting the port opening on the opposite cylinder 15 or 16 to theexhaust outlet opening in the valve, so that the plunger 20 or 21 ismoved from left to right or in a direction which will lift the lower armof the bell crank 28 and thereby raise or lift the stopping block 25.The rollers of the delivery table on the discharge side of the shear arethen caused to rotate and move the sheared piece of material out of itsposition below the then lifted stopping block and at the same time themultiple length blank on the delivery side of the shear is again movedforwardly. After terial has been removed from beneath the shear stop theoperating valve is again manipulated to reverse the movement of theplungers 20 and 21 sothat the lifted stop is again lowered into positionto be again engaged by the advancing forward end of the uncut portion ofthe metal being sheared. The above described operations are thenrepeated as required, the duplex shear being operated so that while oneshear is being actuated through its cutting stroke the other is beingretracted or moved in the opposite direction.

The advantages of my invention will be.

apparent to those skilled in the art.

Modifications in the construction and arrangement of the parts may bemade without departing from my. invention as defined in the appendedclaims.

I claim 2- 1. A shear stop comprising a crosshead adjustahiy secured infront of the shear. and leaving a substantially vertical openingtherethe sheared piece of ma through, a stopping block mounted in saidopening and arranged to move vertically therein into and out ofoperative position, and means for actuating said stopping block.

2. A shear stop comprising a crosshead adj ustably secured in front ofthe shear and having a substantially vertical opening therethrough, astopping block mounted in said opening and arranged to move vertically,and means for actuating said stopping block arranged to extend the lowerend thereof below the bottom surface of said crosshead;

3. A shear stop comprising a crosshead adj ustably secured in front ofthe shear and having an opening extending substantially verticallytherethrough and a vertically movable stoppingblock mounted in saidopening and arranged to movevertically therein into and out of operativeposition, said opening and stopping block having tapering faces arrangedto wedge the stopping block in said opening when in its loweredoperative position, and means for actuating said stopping block.

4. A shear stop comprising a crosshead support extending horizontally infront of the shear, an adjustable crosshead mounted thereon, means forsecuring the crosshead in adjusted positions on said support, avertically extending downwardly tapering opening through the crosshead,a vertically extending stopping block movable in said opening into andout of operative position and meansmounted on the crosshead support foractuating said stopping block on the crosshead.

' 5. A shear stop comprising a crosshead support extending horizontallyin front of the shear, a movable crosshead adjustably mounted on thesupport, means for securing the crosshead in adjusted osition thereon, avertically extending opening in the crosshead, a stopping block mountedin said opening and arranged to move vertically therein into and out ofoperative position, mechanism mountedon said support for actuating thestopping block, and means adjustably' ing in the crosshead, a stoppingblock mount.-

ed in said opening and arranged to move vertically therein into and outof operative position, mechanism mounted on said support for actuatingthe stopping block, and means adjustably connecting the stopping blockand block actuating mechanism.

7. The combination with a duplex shear of ,a horizotally extendingcrosshead support in front of said shear, an adjustable cr0ssheadmounted on the support, vertically extending openings in said crosshead,vertically movable stopping blocks mounted in said openings and arrangedto move into and out of operative position in front of the shear kniveson said duplex shear, mechanism mounted on the crosshead support foractuating the stopping blocks, and means adjustably connecting thestopping blocks with the block actuating mechanism and arranged to movethe stopping blocks into and out of operative position on saidcrosshead.

8. The combination with a duplex shear of a horizontally extendingcrosshead support in front of said shear, an adjustable crossheadsuspended from the support, vertically extending openings in saidcrosshead,

vertically movable stopping blocks mounted in said openings and arrangedto move downwardly to project below the bottom surface of said crossheadinto operative position in front of the shear kmves, on said.

position on said crosshead. In testimony whereof, I have hereunto set myhand.

GEORGE J. BRYEN. Witnesses:

W: EARL LAUGHLIN, J. BXRON NEWMEYER.

